公开(公告)号：US11467679B2

公开(公告)日：2022-10-11

申请号：US14959337

申请日：2015-12-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  SungChul Kim ,  SangHyuck Bae ,  Sungsu Han ,  DoYoung Jung

IPC: G06F3/038 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/044

Abstract: Disclosed is a touch screen device for transmitting button manipulation information based on a touch pen without using a separate wireless communication module. The touch screen device includes a touch screen including a plurality of touch electrodes, a touch driving circuit applying a touch electrode driving signal to the plurality of touch electrodes, and a touch pen receiving the touch electrode driving signal applied to the plurality of touch electrodes and transmitting a pen output signal to the touch screen in response to the received touch electrode driving signal. The touch pen includes at least one button, and when a user manipulates the at least one button, the touch pen adjusts the pen output signal.

公开(公告)号：US11360601B2

公开(公告)日：2022-06-14

申请号：US17078544

申请日：2020-10-23

Applicant: LG Display Co., Ltd.

Inventor： YoungGyu Kim ,  Hyunsuk Cho ,  NamYong Gong ,  HyungUk Jang ,  DoYoung Jung ,  Jongsung Kim

IPC: G06F3/041

Abstract: Embodiments of the present disclosure relate to a touch circuit, a touch display device, and a touch driving method, and more specifically, to a touch circuit, a touch display device, and a touch driving method for simply configuring a system for transmitting signals between a touch display device and a stylus by uniformly arranging intervals between touch driving periods in a touch frame.

公开(公告)号：US11029790B2

公开(公告)日：2021-06-08

申请号：US16802236

申请日：2020-02-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  DoYoung Jung ,  SeungSeok Oh ,  Sungsu Han

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US10768719B2

公开(公告)日：2020-09-08

申请号：US16233537

申请日：2018-12-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  DoYoung Jung

IPC: G06F3/01 ,  G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/0488

Abstract: The aspects of the present disclosure relate to a touch display device, a touch system, a touch driving circuit, a pen, and a pen sensing method, and more particularly, to a touch display device, a touch system, a touch driving circuit, a pen, and a pen sensing method, which may receive a first downlink signal and a second downlink signal output from a pen through all or some of a plurality of touch electrodes and may sense the pen based on received signal strength for each touch electrode for the first downlink signal and received signal strength for each touch electrode for the second downlink signal. According to the aspects of the present disclosure, the pen may be accurately sensed even when a user uses the pen in a tilted manner.

公开(公告)号：US10606389B2

公开(公告)日：2020-03-31

申请号：US15791665

申请日：2017-10-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  DoYoung Jung ,  SeungSeok Oh ,  Sungsu Han

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US10324324B2

公开(公告)日：2019-06-18

申请号：US15669872

申请日：2017-08-04

Applicant: LG Display Co., Ltd.

Inventor： SungChul Kim ,  HyungUk Jang ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1343

Abstract: Exemplary embodiments of the present invention relate to a touch technology, and more specifically, to a signal control circuit, a power control circuit, a drive circuit, a timing controller, a touch system, and a touch sensitive display device and a driving method thereof that can simply swing various voltages in a display device for a touch mode period by using a modulated ground voltage obtained by swinging a ground voltage, thereby effectively providing touch driving and preventing unnecessary parasitic capacitance from being generated not only in an active area but also in all other areas.